Delta Challenge

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Across
  1. 3. Unit of measurement for electric current
  2. 6. 2010 film about a dream thief
  3. 7. 2014 space adventure film directed by Christopher Nolan
  4. 9. Olympic sport involving a combination of cross-country skiing and rifle shooting
  5. 12. 1999 film starring Keanu Reeves as a computer hacker
  6. 14. The "Beautiful Game" played with a spherical ball.
  7. 17. Italian luxury sports car manufacturer
  8. 18. The difference in altitude between the indicated altitude and the true altitude of an aircraft
  9. 19. Game played on a rectangular field with goalposts, touchdowns, and field goals
  10. 22. The branch of physics that deals with the behavior of very small particles
  11. 26. Japanese automaker known for its fuel-efficient vehicles
  12. 27. Popular sport involving a net and shuttlecock
  13. 29. A triangular area of sediment deposited at the mouth of a river, often rich in nutrients
  14. 30. A major American airline known for its hub in Atlanta
  15. 31. Fundamental particle with a negative charge
  16. 33. 1994 film about a man's journey through a magical board game
  17. 34. The smallest unit of a chemical element
  18. 35. 1985 time-traveling film featuring a DeLorean
  19. 37. 1977 space opera directed by George Lucas
  20. 38. A code word used in communication to represent the letter "D."
  21. 40. A team sport played on horseback with mallets and a small ball
Down
  1. 1. 1984 supernatural comedy featuring ghost hunters
  2. 2. A variable representing the degree of difference within a population of organisms
  3. 4. Hypothetical elementary particle that is its own antiparticle and may play a key role in dark matter
  4. 5. 2003 animated film about a clownfish searching for his son
  5. 8. A landform shaped like the Greek letter "delta," often found at the mouth of a river
  6. 10. The process by which plants make their own food using sunlight
  7. 11. A celestial body that orbits a star
  8. 13. 1993 film about a paleontologist's encounter with cloned dinosaurs
  9. 15. The study of the Earth's structure and the processes that shape it
  10. 16. A sport in which athletes perform acrobatic flips and twists on a trampoline
  11. 20. Iconic American muscle car manufacturer
  12. 21. German luxury car manufacturer known for its "Ultimate Driving Machines."
  13. 23. Theoretical force that unifies gravity with the other fundamental forces in physics
  14. 24. This Marvel superhero is known for his high-tech suit and alter ego, Tony Stark
  15. 25. Japanese automaker known for its WRX and Impreza models
  16. 28. A symbol representing a change or difference in a quantity
  17. 32. Equipment used for hitting the golf ball
  18. 36. Electric car company founded by Elon Musk
  19. 39. A winter sport where participants slide on a narrow, twisting, banked ice track.